using System;
using System.Text.RegularExpressions;

public class Test
{
	public static void Main()
	{
var withBrackets = "DisplayName=[s9dFSQ]Height=[rPBM7]User=[5cY]Date=[KJn7Zzd1f]";
var withoutBrackets = Regex.Replace(withBrackets, @"\[[^\]]*\]" , "");
Console.WriteLine(withoutBrackets);
	}
}